(I know the subject would probably suit better to the general ubuntu-devel-list, but since Xubuntu is meant to be used with desktop systems that would possibly benefit the most from compcache, I raise it here. The compcache spec for Intrepid: https://wiki.ubuntu.com/Compcache )
Compcache is activated for live-CD's in Intrepid (or so I've heard: https://bugs.launchpad.net/ubuntu/+source/xubuntu-meta/+bug/70561 - haven't tested personally if it actually reduces the Xubuntu live-CD memory requirements), but judging from the /etc/initramfs-tools/initramfs.conf- file of my installed Intrepid system, it isn't activated by default on desktop systems - COMPCACHE_SIZE doesn't have any value at all. I haven't noticed the subject being referenced here in the mailing list nor in the ubuntu-devel-list (except for a single call for live-cd testing), so a couple of questions follow: - Has there been any testing of compcache on normal non-LTSP desktop systems? - Is compcache module installed by default in desktop kernels and if it is, how do you load it? (There is a compcache directory in /lib/modules/2.6.27-7-generic/kernel/ubuntu - but I put a value to COMPCACHE_SIZE and didn't see the included compcache.ko loaded) - If compcache is loaded and operational, what would be best ways to measure whether it actually increases performance on Xubuntu target systems, ie. systems that have both low-memory and slow CPU? The compcache developers seem to think that a 1,6 Ghz Pentium M is a "legacy system" (see http://code.google.com/p/compcache/wiki/LTSPPerfSummary ) and get very favorable performance numbers for compcache. (Personally, I have a 500 Mhz Pentium 3 laptop with 128MB ram, which is way more "legacy" than that, and probably makes for a good testing fodder.) Kari -- xubuntu-devel mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/xubuntu-devel
